<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--  卡片视图 -->
    <el-card>
      <!-- 添加角色列表区域 -->
      <el-row>
        <el-col>
          <el-button>添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!--展开列-->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <!-- eslint-disable-next-line-->
            <el-row v-for="(item1, i1) in scope.row.children" :key="item1.id"
                    :class="['bd-bottom', i1===0 ?'bdtop':'','vcenter']">
              <!--渲染一级权限-->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item3.id)">{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--渲染二级和三级权限-->
              <el-col :span="19">
                <!--  通过for循环 嵌套渲染二级权限-->
                <!-- eslint-disable-next-line-->
                <el-row v-for="(item2, i2) in item1.children" :key="item2.id"
                        :class="[i2 === 0 ?'' : 'bd-top2','vcenter']">
                  <el-col :span="4">
                    <el-tag closable type="success" @close="removeRightById(scope.row,item3.id)">{{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="20">
                    <!-- eslint-disable-next-line-->
                    <el-tag v-for="(item3,i3) in item2.children" :key="item3.id" closable type="warning"
                            @close="removeRightById(scope.row,item3.id)">
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
<!--            <pre>-->
<!--              {{ scope.row }}-->
<!--            </pre>-->
          </template>
        </el-table-column>

        <!--索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <!--          eslint-disable-next-line-->
          <template slot-scope="scope">
            <el-button icon="el-icon-edit" size="mini" type="primary" @click="showEditRole(scope.row)">编辑</el-button>
            <el-button icon="el-icon-delete" size="mini" type="danger" @click="deleteRoles(scope.row)">删除</el-button>
            <el-button icon="el-icon-setting" size="mini" type="warning" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 编辑功能  -->
    <el-dialog
      :visible.sync="EditDialogVisible"
      title="编辑角色"
      width="60%">
      <span slot="footer" class="dialog-footer">
        <el-form
          ref="eidtFormRef"
          :model="editForm"
          :rules="editFormRules"
          label-width="100px">
          <el-form-item label="角色名" prop="roleName">
            <el-input v-model="editForm.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="editForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>
    <el-button @click="EditDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editRole()">确 定</el-button>
  </span>
    </el-dialog>
    <!-- 分配权限功能 -->
    <el-dialog
      :visible.sync="setRightDialogVisible"
      title="分配权限"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!--树形控件-->
      <el-tree :data="rightsList" show-checkbox :props="treeProps"  node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary"  @click="allotRights">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'MyRoles',
  data() {
    return {
      //  所有角色列表数据】
      rolelist: [],
      EditDialogVisible: false,
      // 用户编辑表单对象
      editForm: {
        roleName: '',
        roleDesc: ''
      },
      // 验证对象
      editFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' }
        ]
      },
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所以权限的数据
      rightsList: [],
      // 这是树形的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      //  默认选中 的节点
      defKeys: [],
      // 当前即将分配权限的角色id
      roleId: '',
      setRoleDialogVisible: false
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    //  获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.rolelist = res.data
      // console.log(this.rolelist)
    },
    // 获取编辑列表
    async showEditRole(row) {
      const { data: res } = await this.$http.get(`roles/${row.id}`)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.editForm = res.data
      this.EditDialogVisible = true
    },
    //  更改编辑请求
    async editRole() {
      const { data: res } = await this.$http.put(`roles/${this.editForm.roleId}`, this.editForm)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success('更改成功!')
      this.getRolesList()
      this.EditDialogVisible = false
    },
    //  删除请求
    async deleteRoles(row) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 点击取消删除
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
      // 确认删除
      const { data: res } = await this.$http.delete(`roles/${row.id}`)
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      this.$message.success('删除成功!')
      //  重新请求数据
      this.getRolesList()
    },
    // 根据ID删除权限
    async removeRightById(role, rightId) {
      //  弹框提示用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除!')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败!')
      }
      this.$message.success('删除权限成功!')
      role.children = res.data
    },
    // 分配权限功能
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限列表失败!')
      }
      // console.log(res)
      this.rightsList = res.data
      // console.log(this.rightsList)
      // 递归获取三级节点的Id
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
      return this.$message.success('获取权限列表成功!')
      // 把获取到的权限数据保存到data中
    },
    // 通过递归的形式，获取角色下所有三级权限的id
    getLeafKeys(node, arr) {
    //  如果当前node节点不包含children属性，则是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      // console.log(keys)
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('更新权限失败!')
      }
      this.getRolesList()
      this.setRightDialogVisible = false
      return this.$message.success('更新成功!')
    }
  }
}
</script>

<style lang="less" scoped>

</style>
